N8n: Duplicate Advisory: Authenticated Users Can Exhaust Temporary Disk Storage via Data-Table File Uploads
n8n versions before 2.28.0 and before 1.123.58 on the 1.x branch have a vulnerability where authenticated users can exhaust disk space by repeatedly uploading files via the data-table file upload endpoint. The vulnerability arises because the quota check per request does not consider files already stored in the shared temporary directory, allowing accumulation until periodic cleanup occurs. This can lead to exhaustion of available disk space on the host system.
AI Analysis
Technical Summary
n8n before versions 2.28.0 and 1.123.58 contains a disk space exhaustion vulnerability (CWE-770) in the data-table file upload endpoint. The per-request quota enforcement fails to account for files already present in the shared temporary directory, enabling authenticated users to upload files repeatedly and accumulate data on disk. This accumulation can exhaust the host's temporary disk storage until the periodic cleanup process runs. The advisory is a duplicate of GHSA-w867-jm58-p9pv and no exploits are known in the wild.
Potential Impact
An authenticated user can cause denial of service by exhausting the temporary disk storage on the host running n8n. This may disrupt normal operation of the application or other services on the host due to lack of disk space. There is no indication of remote code execution or data leakage from this vulnerability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since this advisory is a duplicate and no patch links are provided, users should monitor official n8n advisories for updates. Until a fix is available, consider restricting authenticated user file upload capabilities or increasing monitoring and manual cleanup frequency of temporary storage to mitigate disk exhaustion risk.
N8n: Duplicate Advisory: Authenticated Users Can Exhaust Temporary Disk Storage via Data-Table File Uploads
Description
n8n versions before 2.28.0 and before 1.123.58 on the 1.x branch have a vulnerability where authenticated users can exhaust disk space by repeatedly uploading files via the data-table file upload endpoint. The vulnerability arises because the quota check per request does not consider files already stored in the shared temporary directory, allowing accumulation until periodic cleanup occurs. This can lead to exhaustion of available disk space on the host system.
CVSS v4.0
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
n8n before versions 2.28.0 and 1.123.58 contains a disk space exhaustion vulnerability (CWE-770) in the data-table file upload endpoint. The per-request quota enforcement fails to account for files already present in the shared temporary directory, enabling authenticated users to upload files repeatedly and accumulate data on disk. This accumulation can exhaust the host's temporary disk storage until the periodic cleanup process runs. The advisory is a duplicate of GHSA-w867-jm58-p9pv and no exploits are known in the wild.
Potential Impact
An authenticated user can cause denial of service by exhausting the temporary disk storage on the host running n8n. This may disrupt normal operation of the application or other services on the host due to lack of disk space. There is no indication of remote code execution or data leakage from this vulnerability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since this advisory is a duplicate and no patch links are provided, users should monitor official n8n advisories for updates. Until a fix is available, consider restricting authenticated user file upload capabilities or increasing monitoring and manual cleanup frequency of temporary storage to mitigate disk exhaustion risk.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-2vww-6p9h-5g8j
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-58661"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 4.0
Threat ID: 6a520eec68715ace4391d59c
Added to database: 07/11/2026, 09:37:48 UTC
Last enriched: 07/23/2026, 00:13:54 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 46
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